US3380398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monorail locomotive
Assignee: Qualter Hall and Co Sales Ltd
•
Filing: 1965-04-13
•
Granted: 1968-04-30
•
Expires: 1985-04-13
Abstract
No abstract record available.
Inventors
- 👤 Wainwright Ralph
- 👤 Nash George Valentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:06
CPC Classifications
B; B61; B61C; B61C13/00; B61C13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2063471A
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US2018087A
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US2608163A
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US3101678A
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US3074354A
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US3056359A
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US3129671A
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US3137246A
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US3176628A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |